| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Обервальтерсдорф | city | Niederosterreich | Austria | 47.97 | 16.32 | 830 | 26656 |
| Оберндорф-ан-дер-Мелк | city | Niederosterreich | Austria | 48.05 | 15.22 | 1669 | 3342 |
| Оллерсдорф | city | Niederosterreich | Austria | 48.40 | 16.80 | 830 | 6120 |
| Оппониц | city | Niederosterreich | Austria | 47.87 | 14.82 | 1801 | 2702 |
| Орт-на-Дунае | city | Niederosterreich | Austria | 48.13 | 16.70 | 830 | 5097 |